March 24-25, 2015, HEPG Seventy-Eighth Plenary Session Session One: Storage and the Economics of Clean Electricity: Can Expanded Storage Solve the Challenges of Increased Penetration of Intermittent Resources? Session Two: Distributed Energy Resources and Distribution Systems: Are "DSOs" and More Sophisticated Planning and Network Pricing Needed? Session Three: ISO Governance and Processes: Are They Adequate in an Increasingly Dynamic Market? Is Some Harmonization Needed? Rapporteur's Summary, 110 pages.